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    <meta charset="UTF-8">
    <title>Title</title>
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<form name="punchout_form" method="post" action="https://openapi.alipay.com/gateway.do?charset=utf-8&method=alipay.trade.page.pay&sign=mdTO8LQFcqG6MJh2qi0tYXFNP4TSdWtBXY6RLNsl3jfzPdXT%2FA31M9WkROB8%2FgM7fT7dN6uQJT9UEtvxqIYmBYbOh43Zd3rfqtT3S%2BpgmpyX4hrBU%2BfUwXfkPTdSDbuNTyJSfZ3xPbSvAMJo0X8H1X5UJh6PgTgHPNYnhTeK4yK0k0Dm9zWE3ew%2Bb4CCG0GXfNsP02%2B8I7K0Cx1oMMJh9ghLfonimL3tv6Sl2f5d1NGu%2B%2FyyqZJuqluDa07O3Re4m18WPeIs5atCza4nhu23WiPYNMQIHQgYpnITb3j1r9lGbOoa7DbjysR6Nwh3dFiWzS8rBtdlybxTijkAVGpjCg%3D%3D&return_url=https%3A%2F%2Fwww.baidu.com%2F&notify_url=https%3A%2F%2Fwww.baidu.com%2F&version=1.0&app_id=2018050502638388&sign_type=RSA2&timestamp=2021-04-08+14%3A33%3A31&alipay_sdk=alipay-sdk-java-dynamicVersionNo&format=json">
    <input type="hidden" name="biz_content" value="{&quot;out_trade_no&quot;:&quot;bf4acdb1-25a9-4834-ba67-544aadf30d4d&quot;,&quot;total_amount&quot;:&quot;0.01&quot;,&quot;subject&quot;:&quot;张三&quot;,&quot;body&quot;:&quot;张三&quot;,&quot;product_code&quot;:&quot;FAST_INSTANT_TRADE_PAY&quot;}">
    <input type="submit" value="立即支付" style="display:none" >
</form>
<script>document.forms[0].submit();</script>

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